In traditional island style, the living areas and master bedroom are on the second floor of this house, to take advantage of water views from a higher vantage point. Its beachy charm is overlaid with elegance, with precious antiques and original artwork happily co-existing with personal mementos. The entryway’s striking map of Nantucket was commissioned by Dujardin from artist Christian Thee to suggest a pirate’s treasure map, with the owners’ favorite island spots pinpointed.